[INFO] updating cached repository https://github.com/tengwar/file-dedup
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e0090ab52e14d029e009cae52bfde07bb3074874
[INFO] testing tengwar/file-dedup against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftengwar%2Ffile-dedup" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tengwar/file-dedup on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tengwar/file-dedup
[INFO] finished tweaking git repo https://github.com/tengwar/file-dedup
[INFO] tweaked toml for git repo https://github.com/tengwar/file-dedup written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tengwar/file-dedup already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] beac767766eb3198f8b2b4697667cbd8e996faa7c2de82534eb3ac2ea9e9c2c4
[INFO] running `"docker" "start" "-a" "beac767766eb3198f8b2b4697667cbd8e996faa7c2de82534eb3ac2ea9e9c2c4"`
[INFO] [stderr]    Compiling gcc v0.3.50
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling multimap v0.3.0
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]    Compiling backtrace v0.3.2
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling image-dedup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/helper.rs:8:45
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn visit_dirs(dir: &Path, command: &mut FnMut(&DirEntry) -> Result<()>) -> Result<()> {
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&DirEntry) -> Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 |             let mut some_dupes = &mut helper::find_duplicates(paths) // TODO: use human-readable sizes below.
[INFO] [stderr]    |                 ----^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.91s
[INFO] running `"docker" "inspect" "beac767766eb3198f8b2b4697667cbd8e996faa7c2de82534eb3ac2ea9e9c2c4"`
[INFO] running `"docker" "rm" "-f" "beac767766eb3198f8b2b4697667cbd8e996faa7c2de82534eb3ac2ea9e9c2c4"`
[INFO] [stdout] beac767766eb3198f8b2b4697667cbd8e996faa7c2de82534eb3ac2ea9e9c2c4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6b57d026a15c2f11206c9a6e4f25cf247848f8bbd0060e1c04bd367ca605924a
[INFO] running `"docker" "start" "-a" "6b57d026a15c2f11206c9a6e4f25cf247848f8bbd0060e1c04bd367ca605924a"`
[INFO] [stderr]    Compiling image-dedup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/helper.rs:8:45
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn visit_dirs(dir: &Path, command: &mut FnMut(&DirEntry) -> Result<()>) -> Result<()> {
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&DirEntry) -> Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 |             let mut some_dupes = &mut helper::find_duplicates(paths) // TODO: use human-readable sizes below.
[INFO] [stderr]    |                 ----^^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "6b57d026a15c2f11206c9a6e4f25cf247848f8bbd0060e1c04bd367ca605924a"`
[INFO] running `"docker" "rm" "-f" "6b57d026a15c2f11206c9a6e4f25cf247848f8bbd0060e1c04bd367ca605924a"`
[INFO] [stdout] 6b57d026a15c2f11206c9a6e4f25cf247848f8bbd0060e1c04bd367ca605924a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 8de0edd5ff802e57c482e35a055d928f48890ea0321c372cd6e7c5d9c05c3750
[INFO] running `"docker" "start" "-a" "8de0edd5ff802e57c482e35a055d928f48890ea0321c372cd6e7c5d9c05c3750"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/image_dedup-2428f2174c9d70a4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8de0edd5ff802e57c482e35a055d928f48890ea0321c372cd6e7c5d9c05c3750"`
[INFO] running `"docker" "rm" "-f" "8de0edd5ff802e57c482e35a055d928f48890ea0321c372cd6e7c5d9c05c3750"`
[INFO] [stdout] 8de0edd5ff802e57c482e35a055d928f48890ea0321c372cd6e7c5d9c05c3750